Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T27: Superconductivity:Devices & Materials-II
11:30 AM–2:06 PM,
Thursday, March 9, 2023
Room: Room 219
Sponsoring
Unit:
DCMP
Chair: Daniel Duong, University of South Carolina
Abstract: T27.00001 : Josephson diode effect in twisted d-wave superconductors
11:30 AM–11:42 AM
Presenter:
Tarun Tummuru
(University of British Columbia)
Authors:
Pavel Volkov
(Harvard University; University of Connecticut)
Tarun Tummuru
(University of British Columbia)
Marcel Franz
(University of British Columbia)
Jed Pixley
(Rutgers University)
Stephan Plugge
(University of British Columbia)
Etienne Lantagne-Hurtubise
(Caltech)
For a spontaneously broken time-reversal symmetry, critical current is shown to have different values depending on the direction of the current (diode effect). The direction of the diode effect can be reversed by sweeping the applied current. The dependence of the effect magnitude on the twist angle and interface resistance is evaluated. We also discuss the possible effects of explicit time-reversal symmetry, not related to cotunneling of Cooper pairs, on the diode effect.
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